Angular Typescript On Array.map is returning ""this.array.map is not a function"

I am using Angular 6 and previous got this following to work get all the values associated with an array property.

this.object.array.map(item => item.month).filter((value, index, self) => self.indexOf(value) === index);


In another component, the webservice is returning an array and not an object with an embedded array. The following is throwing map() is not a function which is confusing.

this.array.map(item => item.month).filter((value, index, self) => self.indexOf(value) === index);


Here is the model definition of the array

In my ts code, I declared as following

myArrays: ArrayType[];


in my model.ts

export class ArrayType {

constructor () {


}
public id: string;
public name: string;
public month: string;

}


Thanks

Continue reading...